Calendar, weather and more for the first day of fall – NBC Chicago
The return of fall officially begins on Wednesday and the Chicago area will see several signs of the new season, including the return of cooler temperatures.
The first official day of fall is September 22. The fall equinox, also known as the September or fall equinox, arrives at 2:21 p.m. for the northern hemisphere Wednesday, according to the Old Farmer’s Almanac.
According to the Adler Planetarium in Chicago, the fall equinox marks the time when “day and night are roughly of equal length.”
âIf you’re in the Chicago area,â writes Karen Donnelly in Adler Skywatch, âyou might notice the sun is rising later and later and setting earlier and earlier each day this month.â
âIn fact, in the northern hemisphere, the sun has risen later and set earlier since the summer solstice,â writes Donnelly, âbut from the fall equinox, the time of night sky will last longer than the time of day until the next spring equinox. We will continue to save starry sky observation time until the winter solstice on December 21. “
It also marks the appearance of Chicagohenge in Chicago, this year between September 22 and 25. Donnelly describes the biannual event as a celestial phenomenon marking when you can see the sun rise or set directly between downtown buildings to the east. and the streets facing west.
This year, cooler temperatures will also signal the onset of fall in the Chicago area.
Showers are possible across the region on Wednesday and Thursday, with high temperatures in the mid-1960s and lows dropping to nearly 50 degrees.
Strong winds Wednesday could bring gusts of up to 45 mph near Lake Michigan on Wednesday afternoon and Thursday morning. Very dangerous floods and waves are expected along the lake.
Things should start to heat up a bit by Friday, according to extended forecast models.